JPG to PNG
Convert JPG images to lossless PNG — one or many at once, with optional colour-key transparency.
Processed entirely in your browser. Your image is never uploaded to a server.
- Lossless PNG output — no further generation loss.
- Optionally knock out a solid background colour (white, green, etc.) to transparency in the same step.
- Batch convert and download as a zip.
- Runs in your browser; images aren't uploaded.
Why this is private
- Processed entirely in your browser. Your image is never uploaded to a server.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Converts JPG/JPEG images to lossless PNG. Batch supported, with a before/after comparison, and an optional "make a colour transparent" option for a plain solid-colour background.
How to use it
- 1Add JPG images.
- 2Optionally check "Make a colour transparent", pick the background colour and a tolerance.
- 3Convert and download.
Frequently asked questions
What people use it for
Get an editable, lossless copyConvert a JPG to PNG before editing so repeated saves don't degrade it further.
Meet a tool that requires PNGSome upload forms, icon pipelines and design tools only accept PNG.
Knock out a plain-colour product or logo backgroundConvert and enable colour-key transparency in one step for a photo shot on a solid white, green or other flat backdrop.
Keep screenshots and diagrams sharpPNG avoids the block artefacts JPG adds around text and lines.
Related guides
- How to resize a photo and signature for online formsApplication portals want the photo and signature at exact pixel sizes and tiny file sizes. Here's how to hit both without an app.
- How to compress images for the web without them looking badWhy images make pages slow, how much quality you can drop before anyone notices, and a repeatable way to hit a size target.
- How to resize an image without losing qualityWhat 'without losing quality' really means when you resize, why enlarging is different from shrinking, and how to keep proportions intact.
- JPG, PNG or WebP: which image format should you use?A practical guide to picking an image format — what each one is good and bad at, and when to convert.
Related tools
All image toolsPNG to JPGConvert PNG images to smaller JPG files — one or many at once.JPG to WebPConvert JPG images to the smaller WebP format, in batches.Image ConverterConvert images between JPG, PNG, WebP and AVIF — in batches, with quality control.Compress ImageReduce image file size while controlling quality — one image or a whole batch.
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JPG to PNG